Abstract: An example antenna structure comprises a plurality of radiators arranged with space between one another. A distance between adjacent radiators of at least some of the plurality of radiators is greater than one wavelength of a highest frequency of an operating band of the antenna structure. A reflector is disposed beneath the plurality of radiators, and a metasurface structure is disposed above the plurality of radiators.

Abstract: A multiband antenna for transmitting and receiving a range of frequencies substantially between 150 MHz and 6 GHz of the type having: a base plate-like conductive element connected to a connected-mass conductive surface; a first radiant element configured to transmit and receive in a frequency range substantially between 698 MHz and 6 GHz; a second radiant element connected—at the upper part—to said first radiant element and configured so as to collaborate with the first radiant element to transmit and receive in a frequency range substantially between 400 MHz and 500 MHz; a radiant unit configured to transmit and receive in the frequency range substantially between 216 MHz and 223 MHz and in the frequency range substantially between 159 MHz and 163 MHz; an electrical connector with an external device, mechanically and electrically connected to the vertex of the first radiant element.

Abstract: A multiband antenna for transmitting and receiving a range of frequencies substantially between 150 MHz and 6 GHz of the type having: a base plate-like conductive element connected to a connected-mass conductive surface; a first radiant element configured to transmit and receive in a frequency range substantially between 698 MHz and 6 GHz; a second radiant element connected—at the upper part—to said first radiant element and configured so as to collaborate with the first radiant element to transmit and receive in a frequency range substantially between 400 MHz and 500 MHz; a radiant unit configured to transmit and receive in the frequency range substantially between 216 MHz and 223 MHz and in the frequency range substantially between 159 MHz and 163 MHz; an electrical connector with an external device, mechanically and electrically connected to the vertex of the first radiant element.